Printing material container, and board mounted on printing material container

Abstract

A printing material container is detachably attachable to a printing apparatus having a plurality of apparatus-side terminals. The printing material container comprises a first device, a second device, and a terminal group that includes a plurality of first terminals, at least one second terminal and at least one third terminal. The plurality of first terminals are connected to the first device and respectively include a first contact portion for contacting a corresponding terminal among the plurality of apparatus-side terminals. The at least one second terminal is connected to the second device and includes a second contact portion for contacting a corresponding terminal among the plurality of apparatus-side terminals. The at least one third terminal is for the detection of shorting between the at least one second terminal and the at least one third terminal and includes a third contact portion for contacting a corresponding terminal among the plurality of apparatus-side terminals. The at least one second contact portion, the plurality of the first contact portions, and the at least one third contact portion are arranged so as to form one or multiple rows. The at least one second contact portion is arranged at an end of one row among the one or multiple rows.

What is claimed is: 
     
       1. A circuit board mountable on a printing material container that is used in an ink jet printing apparatus, the ink jet printing apparatus having a print head and a plurality of apparatus-side contact forming members, the printing material container having a body and an ink supply opening, the ink supply opening having an exit on an exterior portion of the body and being adapted to supply ink from the printing material container to the printing apparatus, the circuit board comprising:
 a memory device adapted to be driven by a memory driving voltage; 
 an electronic device adapted to receive a voltage higher than the memory driving voltage; and 
 a plurality of terminals having contact portions adapted and positioned to contact corresponding apparatus-side contact forming members so that electrical communication is enabled with the ink jet printing apparatus, the contact portions of the terminals including a plurality of memory contact portions electrically coupled to the memory device, a first electronic device contact portion electrically coupled to the electronic device, a second electronic device contact portion electrically coupled to the electronic device, and a short detection contact portion positioned and arranged to electrically contact a contact forming member that itself is electrically coupled to a short detection circuit of the printing apparatus, wherein: 
 the contact portions are arranged in a plurality of rows, and 
 the contact portions are arranged so that, the contact portion farthest to the left is the first electronic device contact portion, the contact portion that is farthest to the right is the second electronic device contact portion, the contact portion that is second farthest to the right is the short detection contact portion, and the memory contact portions are located to the left of the short detection contact portion and to the right of the first electronic device contact portion. 
 
     
     
       2. The circuit board of  claim 1 , wherein the electronic device is adapted to receive a first voltage and output a voltage lower than the first voltage. 
     
     
       3. The circuit board of  claim 1 , and including a second short detection contact portion arranged so that the second short detection contact portion is the second farthest of the contact portions to the left. 
     
     
       4. The circuit board of  claim 3 , wherein the memory contact portions are to the left of the short detection contact portion and the second electronic device contact portion and to the right of the second short detection contact portion and the first electronic device contact portion. 
     
     
       5. The circuit board of  claim 3 , wherein:
 the contact portions are arranged in a first row of contact portions and in a second row of contact portions, 
 the first electronic device contact portion and the second electronic device contact portion are located at both ends of the first row of contact portions, and 
 the short detection contact portion and the second detection contact portions are located at both ends of the second row of contact portions. 
 
     
     
       6. The circuit board of  claim 5 , wherein a number of the contact portions in the first row of contact portions is larger than a number of the contact portions in the second row of contact portions. 
     
     
       7. The circuit board of  claim 1 , wherein the short detection contact portion is positioned and adapted for detecting a short between the short detection contact portion and at least the second electronic device contact portion, the short detection contact portion being adjacent to the second electronic device contact portion, with no other contact portion therebetween. 
     
     
       8. The circuit board of  claim 1 , wherein:
 the contact portions are arranged in a first row of contact portions and in a second row of contact portions, 
 the first electronic device contact portion and the second electronic device contact portion are located at both ends of the first row of contact portions, and 
 the short detection contact portion is located at an end of the second row of contact portions. 
 
     
     
       9. The circuit board of  claim 8 , wherein a number of the contact portions in the first row of contact portions is larger than a number of the contact portions in the second row of contact portions.